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Using multiple batteries
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Using multiple batteries
As your power requirements increase, you may need to use
more than one battery to obtain sufficient capacity. Read
“Two batteries connected in parallel” and “Two separate
battery banks” to determine whether two batteries or two
battery banks are more appropriate for your applications.
Two batteries connected in parallel
Two identical batteries can be connected (positive (+) to
positive and negative (–) to negative) in a parallel system. A
parallel system doubles capacity and maintains the voltage of
a single battery.
Two separate battery banks
If you need more than two batteries (or are using different
makes or models of batteries), Xantrex recommends that you
install two separate battery banks and a battery selector
switch.
By installing a battery selector switch, you can select
between the two battery banks, use both banks in parallel, or
disconnect both banks from the load. Battery selector
switches are available at marine and RV dealers.
CAUTION
Do not connect the following in parallel: batteries made by
different manufacturers, different types of batteries,
batteries that have different Ah ratings. Decreased battery
life and improper charging will result.